... solution to simulate weak black liquor environments (5 g/L sodium hydroxide and 20 g/L sodium sulphide) at 160°C to perform laboratory experiments. These experiments used a K02700 (A516 grade 70 carbon steel) working electrode to perform potentiodynamic, open circuit potential and immersion experiments...

.... The electrochemical tests were performed in deaerated 20% hydrochloric acid at an ambient temperature. The open circuit potential (OCP) was recorded for 1h to attain a near steady-state potential. Upon completion of the OCP measurement, linear polarization resistance (LPR) tests were conducted as per ASTM G-59 [ 9...

... to carbon steel led to reduced fouling. In fact, a difference in Cr to Ni ratio was identified as a possible reason for the reduced susceptibility of SS 304 to SS 316. Figure 3 compares the open circuit potential curves measured on several nickel and chromium containing alloys that were previously freshly...

... oxides and unmelted particles. All of these parameters can alter the corrosion property of APS deposited alloy 625. This study compares corrosion behavior of APS deposited alloy 625 with wrought alloy 625. Both open circuit potential and polarization measurements were used to evaluate corrosion...

... Laboratory Solutions Variation of Open Circuit Potential as a Function of pH and Inhibitor Type Figure 1 shows the time dependence of the corrosion potential, E_CORR, after cathodic reduction measured up to 2 hours until a steady-state potential was established. The brass surface was exposed...

... and the properties of the surface film have been studied using cyclic voltammetry and open circuit potential. open circuit potential fouling cyclic voltammetry stainless steel naphtha quench tower bottoms raw pyrolysis gasoline INTRODUCTION Petrochemical facilities are susceptible to both corrosion...

... of carbon steel 1018 in several petrochemical environments. The open circuit potential is measured and the effect of water and carboxylic acid concentration studied on the initiation of corrosion/fouling on carbon steel in a C6 solvent mixture at 220 ± 5° C. A corrosion mechanism is proposed that is similar...

... the corrosion current density of metallic electrodes in aqueous solutions at the open circuit potential of the electrodes in the aqueous solutions. Holographic interferometry Corrosion current density Zero resistance Ammeter Linear polarization Open circuit potential Low carbon steel Stainless steel...

... that crack growth took place by the union of longitudinally aligned interdendritic arms. The results are in agreement with the Parkins model of crack nucleation by simultaneous action of passive film formation, film rupture. Austenitic Stainless Steel Weldment Anodic Polarization Open Circuit Potential...

...The open-circuit potential of UNS N08825 initially was -225 mV and it remained at this value for 100h, after which it shifted in the noble direction. Between 240 and 360h of exposure, fluctuation in potential was observed, after which the fluctuation was slight and shifted gradually towards...

... SoftCorr II package. Open circuit potentials were measured using a Keithley 195A Digital Multimeter. RESULTS AND DISCUSSION Salt Fog and Field Tests Results The coatings tested in this investigation were (1) aluminum pigmented coating, (2) aluminum phenolic, (3) aluminum aliphatic coating with mono-zinc...

... water. The open circuit potential (E_oc) and R_p was used to correlate corrosion susceptibility and bacterial activity with alloy composition and welding parameters. weldments sulfate reducing bacteria austenitic stainless steel Ni-Cr-Mo alloy microbial influenced corrosion...